The Delaware River has been home to steamboats and canoes, swimmers and fishermen, and shipyards and factories for generations. Recreation and industry have long coexisted along its changing banks. Along the Delaware River presents the Delaware River corridor-from Hancock, New York, in the Catskill Mountains, to the mouth of the Delaware Bay-at the beginning of the twentieth century. Postcards, many nearly a hundred years old, are used to show a river system that both resembles and differs greatly from the one we know today.